Process for the production of 4-chloro-butanals

Details Process for the production of 4-chloro-butanals Process for the production of 4-chloro-butanals

1986-10-22

1987-09-01

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568465, 568490, 568676, C07C 4542

Patent

active

046910620

ABSTRACT:
4-chloro-butanals of the formula ##STR1## where R is hydrogen or a straight or branched chain alkyl group of 1 to 4 carbon atoms are produced by reacting the corresponding 1,1-dimethoxy-4-hydroxybutane at a temperature between -20.degree. and +80.degree. C. in the presence of triphenylphosphine with carbon tetrachloride and hydrolyzing the 1,1-dimethoxy-4-chloro-butane obtained in acid medium.

REFERENCES:
patent: 2579515 (1951-12-01), Roach
patent: 3093689 (1963-06-01), Cofer et al.
patent: 4551560 (1985-11-01), Rizkalla

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